Calcium is one of the major components in the structure of coral skeletons and shells of many marine animals including giant clams and snails. Magnesium is required to keep high concentrations of calcium available in aquarium water.
Aqua One Calcium and Magnesium is formulated to keep a balance of these two minerals in the marine aquarium.
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Wonderful service. I had some problems with some equipment that I had and they fixed it for me in a flash. My fish have never been happier and my tank has never been cleaner. My fish are even breeding now. Thanks guys. - Steve Gleeson